New York Public Library president Anthony Marx pleaded guilty to driving drunk in a library-owned car and was slapped with a $500 fine today, a library spokesperson said.

Marx, 52, was charged with DWI last month after he backed the 2009 Audi into a parked vehicle on East 138th Street.

After entering his guilty plea yesterday, Marx had his license revoked for six months and was ordered to undergo 16 counseling sessions, complete a drunk driving program and have an ignitiion interlock device installed in any car he chooses to drive, the spokesperson for the public library system said.

After his arrest on November 6, he said “I deeply regret embarrassment caused to my family and to the New York Public Library. My focus now is on moving forward and assuring that this incident does not detract from the important work and mission shared by all my colleagues.”

The library issued a statement today saying: “The New York Public Library is satisfired that the incident has been resolved and looks forward to the important work ahead for Dr. Marx and the library.”